Sheet-metal sash-pulley.



PATBNTBD APR.1I1,1905.

P. DosGH. SHEETI METAL s A'SH PULLBY.

APPLICATION FILED MAY 11, 1904.'

Patented April 11, 1905.

PATENT OFFICE. l

PETER DOSCH, OF BRIDGEPORT, CONNECTICUT.

SHEET-METAL sAsH-PULLEY.

SPECIFICATION forming part et" Letters Ietent Ne. 786,801, dated Aprn 11, 1905.

Application filed May 11, 1904. Serial No. 207,352.

To all whom it may concern:

Be it known that I, PETER DosCH, a citizen of the United States, and a resident of the city of Bridgeport, county of Fairfield, State ot" Connecticut, have invented a rnew and useful Improvement in Sheet-MetalSash-Pulleys, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1 illustrates an elevation of a pulley embodying my improvement. Fig. 2 illustrates a sectional view on the line 2 2 of Fig.. l. Fig. 3 illustrates a sectional view of a part of the pulley-wheel, showing one method of applying brass or antirusting material thereto. Figs. 4, 5, and 6 illustrate details of construction of modified arrangements vof the parts composing the wheel.

My invention has for its object improvements in the construction of the wheel for sashpulleys whereby greater durability, strength, appearance, and utility are secured and also immunity from rust, which is apt to rot and otherwise injure the sash-cord where ordinary steel or cast-iron wheels are used.

In the specilication I shall describe the structure generally, although the claims hereof are limited to the pulley-wheel.

Referring to the drawings hereof, A represents the face-plate. It is a thick strong 'piece of metal never less than twice as thick as the side plates of the sash-pulley. It may be made of sheet steel orsiron, but I prefer to make it of brass, aluminium-bronze, or other non-rusting material. It is made of the proper width and length Yand has a opening in its center, as usual.

BB are two countersunk screw-holes neatly made in the ends of the face-plate, whereby it is attached to the window-frame.

C C are the side plates of the structure. They may be made ol' metal thinner than the face-plate, but I prefer to make them of ma- -terial heavier and of better quality than that heretofore used in these sheet-metal sash-pulleys. The side plates may be made separate from each other or in the form of a single plate bent upon itselfV and united at the ends in any suitable manner.-

D D are openings made in the side plates,

slotted through which lips E E engage; which form opening therein, whereby the face-plate is vrigidly bound to the side plates.

Fis the wheel. I prefer to make it of two parts of sheet-steel G and G', (see Fig. 3,) provided with a suitable hub, and the groove or rope-receiving periphery of this wheel may be made in a variety of ways, some of which I illustrate-that is to say, in Fig. 3. The outer parts of the steel side plates G and G are formed in a guttered or concaved shape, as shown at H and H. (See` Fig. 3.)

I is a piece of brass, aluminium-bronze, or equivalent material, which need not be very thick and which is sprung, pressed, or otherwise made to conform to the annular and guttered or concaved shape of the underlying steel parts H and Hf. The edges J and J ol this piece of brass or aluminium-bronze may be lapped over the outwardly projecting edges of the steel parts H and H', as shown in Fig. 3, whereby handsome finished edges and secure retention of the non-corrosive brass- 0r. aluminium-bronze is obtained.

In Fig. 4 I show a modification of this construction. In it the grooved ring or annulus K is shown, which is made of brass and has an inwardly-projecting ilange or lip L, which is provided with laterally-extending studsM, and the two steel side plates G and G' are so arranged as to present a deflected edge embodying the two annular separated flanges N and N', between which the flange or rib L on the brass annulus lits, and the studs IVI enter holes made in the dellected parts N and N The wheel is or may be held together in this construction by eyelets O, formed upon the side plates Gr and G or in any other suitable manner.

In Fig. 5 I show another construction, in

\which the two side plates Gr and Gr are bifurcated at their outermost parts, the same as in Fig. 4, and the annular cast ring K, having the inwardly-projecting Harige L, is used thesame as in Fig. 4; but in this case I hold the parts together by passing rivets P through the bifurcated parts N and Nl of the side plates and through holes made in lugs Q, which are cast IOO or otherwise formed on the ring K. (See Fig. 6.) There may be as many of these rivets as desired, and instead of lugs Q being made on the rib L the entire rib may be made of a width equal to that of the lugs.

I show the construction illustrated in Fig. 6, because thereby I effect a little saving in the Weight of brass.

It will be obvious to those who are familiar with this art that modifications may be made in the details of construction as described and illustrated above without departing from the essentials of the invention. I therefore do not limit myself to the details.

I claim-- 1. A Wheel for a sash-pulley embodying a solid grooved ring made of non-rusting material, such as brass, having an inwardly-projecting rib thereon, the interior parts or frame of the wheel being composed of two plates of sheet metal attached together, the peripheries whereof are separated to receive the said rib and are provided with shoulders upon which the edge of the rib rests, and rivets or plates which pass through the peripheries of the plates and through said rib.

2. A wheel for a sash-pulley embodying a solid grooved ring made of non-rusting material, such as brass, having an inwardly-projecting rib thereon, the interior parts or frame of the wheel being` composed of two plates of sheet metal attached together, the peripheral edges of which plates engage with and are riveted or bolted to the rib of the grooved ring.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PETER DOSGIfl.

Witnesses:

PHILLIPS ABBOTT, F. M. DoNsBAcH. 

